1/2"x1/2" mesh, 19 gauge galvanized after welded core wire mesh is coated with a thick layer of black PVC, tightly bonded to the wire. The entire mesh is thoroughly sealed and protected against rust and corrosion. This material will last! It is lighter in weight and strength than the 16 gauge 1/2"x1/2" mesh and therefore costs less. Particularly useful for animal enclosures or other applications where a light mesh, rust prevention and long life are desired. It can be used as low cost flooring for chukarpens, though we recommend the heavier 16 gauge material. It also makes an effective exclusion barrier for nuisance wildlife.